Vehicular ejector system and control method thereof
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShigemasa Hirooka
Life of this patent
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Abstract
A vehicular ejector system having an ejector that generates a negative pressure that is greater than the intake manifold negative pressure that is to be extracted from an intake manifold, a VSV that causes the ejector to function or stop functioning, and an ECU that controls the VSV. The ECU includes a control device that controls the VSV so as to cause the ejector to function if an ISC request amount for controlling, during idling, a throttle valve that adjusts the intake air flow amount supplied to the internal combustion engine is greater than a predetermined amount.
Claims8
A control method of a vehicular ejector system including an ejector that generates a negative pressure that is greater than the negative pressure that is to be extracted from an intake passageway of an intake system of the internal combustion engine;
- a state change device that causes the ejector to function or stop functioning;
- and a control device that controls the state change device, the control method comprising:
- determining whether or not an idle control is being performed in the internal combustion engine;
- determining whether or not an idle speed control request amount used to adjust an intake air flow amount supplied to the internal combustion engine during idling is greater than a predetermined value if the idle control is being performed;
- and
- controlling the state change device so as to cause the ejector to function if the idle speed control request amount is greater than the predetermined value.
A vehicular ejector system comprising:
- an ejector that generates a negative pressure that is greater than the negative pressure that is to be extracted from an intake passageway of an intake system of the internal combustion engine;
- a state change device that causes the ejector to function or stop functioning;
- and
- a control device that controls the state change device,
- wherein when an idle speed control request amount for controlling a flow amount adjustment device that adjusts an intake air flow amount supplied to the internal combustion engine during idling is greater than a predetermined amount, the control device controls the state change device so as to cause the ejector function.
Dependencies are inferred from the claim text.